Huawei p20 Pro GPS accuracy?

When I had some GPS problems on my mobile a few months ago, I found a point in the settings where I could adjust the accuracy of the GPS. Now I have such problems again but this attitude seems to have been removed with some update. Does anyone know advice? So GPS works in itself, but even despite a GPS app with which I deleted and renewed AGPS data, the accuracy of my GPS varies a lot. I thank you in advance.

If you reset all GPS data, then unfortunately you have to wait a few hours.

It takes some time until the devices have "leveled".

I have often found this with smartphones.
If you use GPS for a while, it gets better and better (again next time)

So it's best to use GPS for a while and wait. It gets even better.

It's also worth using GPS FIX as an app. Let the app run while you walk a round:-P